I feel as if this is something you personally think about it. In my opinion, as a person everyone creates a story based on what they KNOW about them selves, you ask yourself a question and you answer within .5 seconds because you already have answers about yourself. In your head you build up a story because of all the facts you already know
That would be D the gramicological errors were unmistakable
A well -written paragraph without a stated topic sentence has no main idea
I think it's a pun (basically a joke that is related to a specific word, like its meaning or sound) - because it's wordplay about light vs heavy